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TabI& • <br /> Groundwater An ical Results <br /> Chevron Service Station#9-8264 <br /> 3775 Tracy Boulevard <br /> Tracy,California <br /> Analytical values are in parts per billion(ppb <br /> DATE 2,4- 2- 4- Nap Phenol Cd Cr Pb NI Zn PPA Methanol Ethanol TBA MTBE DIPE ETBE TAME <br /> Dim MnPht MnP'ht 8264 (EPA 8260) <br /> MW-3 <br /> 08/27/97 - -- -- -- -- -- -- <2 0-<5 0 <1000 <500 <100 130 <2 0 <2 0 <2 0 <br /> 11/24/97 - -- -- -- -- -- <1200 <250 290 <5 0 <5 0 <5 0 <br /> 06/09/98 - -- -- -- - - <500 <100 120 <2 0 <2 0 27 <br /> i <br /> 08/10/98 -- -- -- -- -- -- -- -- -- -- - <500 <100 100 <2 0 <2 0 <2 0 <br /> 02/02/00 -- -- - -- -- -- -- -- - -- -- <100000 <20000 14100 <200 <200 450 <br /> MW-4 <br /> 08/27/97 - -- __ __ __ _ -- -- <2 0-<5 0 <1000 <500 <100 20 <2 0 50 <2 0 <br /> 11/24/97 -- - -- -- -- -- -- -- -- -- -- -- <500 <100 24 <2 0 28 <2 0 <br /> 06/09/98 -- -- -- -- -- -- -- -- -- -- - <2500 <500 590 <10 <10 47 <br /> 081110198 -- - - -- -- -- -- -- - <4150 <830 1100 <17 <17 150 <br /> 02/02/00 -- -- -- -- - - <100000 <20000 15100 <200 <200 422 <br /> i <br /> EXPLANATIONS: <br /> Groundwater laboratory analytical results prior to May 18,2000,were compiled from reports prepared by Blaine Tech Services,Lnc <br /> 2,4-Dim=2,4-Dimethylphenol Cr=Chromium MTBE=Methyl tertiary butyl ether <br /> 2-MnPht=2-Methylphenol Pb=Lead D1PE=Di-isopropyl ether <br /> 4-MnPht=4-Methylphenol Ni=Nickel ETBE=Ethyl tertiary butyl ether <br /> Nap=Naphthalene Zn=Zinc TAME=Tertiary amyl methyl ether <br /> Cd=Cadmium TBA=Tertiary butyl alcohol =Not Analyzed <br /> I Laboratory report indicates calcium was detected at 130,000 ppb <br /> ANALYTICAL METHODS- <br /> Dissolved Metals by EPA 200 Series Methods <br /> Volatile Organic Compounds by EPA Method 8010B <br /> Semivolatile Organic Compound by EPA Method 8270E <br /> 9-8264 xis/#386854 8 <br /> As of 08/11/00 <br />